The Radiations of <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mrow><msup><mrow><mi mathvariant="normal">Th</mi></mrow><mrow><mn>231</mn></mrow></msup></mrow></math></span> (UY)

Melvin S. Freedman; Arthur H. Jaffey; Frank Wagner, Jr; Jack May

doi:10.1103/PhysRev.89.302

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The Radiations of ${Th}^{231}$ (UY)

Melvin S. Freedman, Arthur H. Jaffey, Frank Wagner, Jr., and Jack May

Chemistry Division, Argonne National Laboratory, Chicago, Illinois

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Phys. Rev. 89, 302 – Published 1 January, 1953

DOI: https://doi.org/10.1103/PhysRev.89.302

Abstract

$β$ -ray spectrum studies on a double-lens spectrometer of the electron spectrum of UY revealed a complex spectrum with three beta-components of 302 kev (44 percent), 216 kev (11 percent), and 94 kev (45 percent), and numerous conversion lines assignable to gammas of 22, 59, 63, 85, 122, 167, and 208 kev, each of these except the 122 kev also observed directly as gammas in a scintillation spectrometer. There is also evidence for a 107- and for a 230-kev gamma-ray. The samples were separated carrier-free from isotopically pure $U^{235}$ (99.86 percent) by solvent extraction. A decay scheme is presented which gives a total disintegration energy of 324 kev.

References (30)

A. H. Jaffey and E. K. Hyde, Argonne National Laboratory Report ANL-4249 (1949) (unpublished)
Nishina, Yasaki, Kimura, and Ikawa, Nature 142, 874 (1938)
Jaffey, Lerner, and Warshaw, Phys. Rev. 82, 498 (1951)
G. B. Knight and R. L. Macklin, Phys. Rev. 75, 34 (1949)
Stoker, Hok, and Sizoo, Physica 17, 164 (1951)
Freedman, Jaffey, May, and Wagner, Argonne National Laboratory Report ANL-4613, 67 (1951) (unpublished) Phys. Rev. 86, 633 (1952)
L. Langer and R. D. Moffat, Phys. Rev. 78, 74 (1950)
Langer, Motz, and Price, Phys. Rev. 77, 798 (1950)
Omitted endnote
A. H. Compton and S. R. Allison, X-Rays in Theory and Experiment (D. Van Nostrand and Company, Inc., New York, 1935), second ed., p. 794
Omitted endnote
[R. K. Swank, Argonne National Laboratory Report ANL-4303 (1949) (unpublished) R. K. Swank and J. S. Moenich, Rev. Sci. Instr. (to be published)] [13]
S. A. E. Johannson, Nature 165, 396 (1950) R. W. Pringle, 166, 11 (1950) Bell, Cassidy, and Kelley, Phys. Rev. 82, 103 (1951) R. Hofstadter and J. McIntyre, 78, 617 (1950) ibid.80, 631 (1950) Nucleonics 7, 32 (September, 1950)
Omitted endnote
Omitted endnote
H. B. Keller and J. M. Cork, Phys. Rev. 84, 1079 (1951) M. Freedman and D. Engelkemeir, 79, 897 (1950)
J. S. Fraser, Phys. Rev. 76, 1540 (1949) D. Saxon and J. Richards, 76, 186 (1949) H. Agnew, 77, 655 (1950) R. Caldwell, 78, 407 (1950)
[19] [19]
A. H. Compton and S. K. Allison, [10], pp. 640-1, 785
West, Meyerhof, and Hofstadter, Phys. Rev. 81, 141 (1951)
F. K. McGowan, Phys. Rev. 85, 151 (1952)
D. W. Engelkemeir (private communication)
R. W. Pringle and S. Standil, Phys. Rev. 80, 762 (1950)
V. O. Eriksen and G. Jenssen, Phys. Rev. 85, 150 (1952) West, Meyerhof, and Hofstadter, 81, 141 (1951) Jentschke, Eby, Taylor, Remley, and Kruger, 83, 170 (1951) ibid.84, 1034 (1951)
J. A. McIntyre and R. Hofstadter, Phys. Rev. 78, 617 (1950) R. Hofstadter and J. A. McIntyre, 80, 631 (1950)
F. K. McGowan (private communication)
Omitted endnote
M. T. Jones, Phys. Rev. 50, 110 (1936)
B. B. Kinsey, Can. J. Research 26A, 404 (1948)
M. G. Mayer, Phys. Rev. 78, 16 (1950)

[c1] A. H. Jaffey and E. K. Hyde, Argonne National Laboratory Report ANL-4249 (1949) (unpublished)

[c2] Nishina, Yasaki, Kimura, and Ikawa, Nature 142, 874 (1938)

[c3] Jaffey, Lerner, and Warshaw, Phys. Rev. 82, 498 (1951)

[c4] G. B. Knight and R. L. Macklin, Phys. Rev. 75, 34 (1949)

[c5] Stoker, Hok, and Sizoo, Physica 17, 164 (1951)

[c6] Freedman, Jaffey, May, and Wagner, Argonne National Laboratory Report ANL-4613, 67 (1951) (unpublished) Phys. Rev. 86, 633 (1952)

[c7] L. Langer and R. D. Moffat, Phys. Rev. 78, 74 (1950)

[c8] Langer, Motz, and Price, Phys. Rev. 77, 798 (1950)

[c9] Omitted endnote

[c10] A. H. Compton and S. R. Allison, X-Rays in Theory and Experiment (D. Van Nostrand and Company, Inc., New York, 1935), second ed., p. 794

[c11] Omitted endnote

[c12] [R. K. Swank, Argonne National Laboratory Report ANL-4303 (1949) (unpublished) R. K. Swank and J. S. Moenich, Rev. Sci. Instr. (to be published)] [13]

[c13] S. A. E. Johannson, Nature 165, 396 (1950) R. W. Pringle, 166, 11 (1950) Bell, Cassidy, and Kelley, Phys. Rev. 82, 103 (1951) R. Hofstadter and J. McIntyre, 78, 617 (1950) ibid.80, 631 (1950) Nucleonics 7, 32 (September, 1950)

[c14] Omitted endnote

[c15] Omitted endnote

[c16] H. B. Keller and J. M. Cork, Phys. Rev. 84, 1079 (1951) M. Freedman and D. Engelkemeir, 79, 897 (1950)

[c17] J. S. Fraser, Phys. Rev. 76, 1540 (1949) D. Saxon and J. Richards, 76, 186 (1949) H. Agnew, 77, 655 (1950) R. Caldwell, 78, 407 (1950)

[c18] [19] [19]

[c19] A. H. Compton and S. K. Allison, [10], pp. 640-1, 785

[c20] West, Meyerhof, and Hofstadter, Phys. Rev. 81, 141 (1951)

[c21] F. K. McGowan, Phys. Rev. 85, 151 (1952)

[c22] D. W. Engelkemeir (private communication)

[c23] R. W. Pringle and S. Standil, Phys. Rev. 80, 762 (1950)

[c24] V. O. Eriksen and G. Jenssen, Phys. Rev. 85, 150 (1952) West, Meyerhof, and Hofstadter, 81, 141 (1951) Jentschke, Eby, Taylor, Remley, and Kruger, 83, 170 (1951) ibid.84, 1034 (1951)

[c25] J. A. McIntyre and R. Hofstadter, Phys. Rev. 78, 617 (1950) R. Hofstadter and J. A. McIntyre, 80, 631 (1950)

[c26] F. K. McGowan (private communication)

[c27] Omitted endnote

[c28] M. T. Jones, Phys. Rev. 50, 110 (1936)

[c29] B. B. Kinsey, Can. J. Research 26A, 404 (1948)

[c30] M. G. Mayer, Phys. Rev. 78, 16 (1950)

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The Radiations of Th231 (UY)

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The Radiations of ${Th}^{231}$ (UY)